CN108162952B - Novel four-wheel drive hybrid power system and driving method thereof - Google Patents

Novel four-wheel drive hybrid power system and driving method thereof Download PDF

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Publication number
CN108162952B
CN108162952B CN201611107536.9A CN201611107536A CN108162952B CN 108162952 B CN108162952 B CN 108162952B CN 201611107536 A CN201611107536 A CN 201611107536A CN 108162952 B CN108162952 B CN 108162952B
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power battery
battery
motor
vehicle
engine
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CN108162952A (en
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钟凤辉
刘仲阳
安宇
邢华沛
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Hainan Haima Automobile Co.,Ltd.
Haima Motor Corp
Haima New Energy Vehicle Co Ltd
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Haima Motor Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/24—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention provides a novel four-wheel drive hybrid power system, which comprises an engine, an automatic transmission, a first motor, a battery, a first power battery, a second motor and a speed reducer, wherein the engine is connected with the first motor; the engine is connected with a front driving shaft of the vehicle through an automatic transmission to drive front wheels of the vehicle; the engine is connected with the first motor, and the first motor is connected with the first power battery; the first power battery is connected with the second power battery, the second power battery is connected with the second motor, the battery is connected with the first power battery, and the battery is used for meeting the requirements of electric appliances of a vehicle voltage platform; the second motor is connected to a rear drive shaft of the vehicle through a speed reducer to drive rear wheels of the vehicle. On the other hand, the invention also provides a novel four-wheel drive hybrid power driving method. The four-wheel drive system can realize the four-wheel drive function, can enable the front and rear power assemblies to output torque as required, enables the vehicle to obtain the optimal power combination, obviously improves the power performance of the vehicle, and is excellent in economy, energy-saving and environment-friendly.

Description

Novel four-wheel drive hybrid power system and driving method thereof
Technical Field
The application relates to the field of automobile power systems, in particular to a novel four-wheel drive hybrid power system and a driving method thereof.
Background
Automobiles have been widely used as transportation tools, and new energy automobiles have become the main direction for the development of the vehicle industry in order to meet the requirements of energy conservation and environmental protection. Among the drive systems of new energy vehicles, the hybrid system has attracted much attention because it combines the low emission advantages of electric vehicles with the high specific energy advantages of internal combustion locomotives.
Hybrid power systems in the prior art are mainly classified into P0, P1, P2, P3, P4 and PS (planetary gear set) systems according to the position of a motor. The P0 system refers to a type of hybrid moving called P0 framework that a motor is arranged at the front section of an engine and is connected with the engine in a belt mode and is also called BSG; p1 refers to that the motor is arranged at the rear end of the engine and is rigidly connected with the engine, which is also called ISG; p2 refers to the electric machine installed after the clutch intermediate the transmission and the engine; p3 means that the motor is mounted on the output shaft of the transmission; p4 means that the motor is mounted on the rear axle.
In the prior art, common hybrid power systems are P0, P1, P2, P3, P4, PS (planetary gear train scheme) systems and combinations thereof, a single hybrid scheme is difficult to simultaneously consider two purposes of power performance and energy conservation and emission reduction, and the combination integration level among different schemes is high, and the axial size of a cabin is required to be larger, so that the arrangement is limited; if the problem of limited arrangement is not considered, the manufacturing process requirement is high, the control is difficult to realize, the cost advantage is poor and the platform expansibility is poor.
Disclosure of Invention
In order to solve the problem that the prior art is difficult to simultaneously consider two purposes of dynamic property and energy conservation and emission reduction, the combination integration level of different schemes is high, and the axial size of a cabin is required to be larger, so that the arrangement is limited; the invention provides a novel four-wheel drive hybrid power system and a driving method thereof, and solves the problems of high manufacturing process requirement, difficult control realization, poor cost advantage, poor platform expansibility and the like.
Firstly, the invention provides a novel four-wheel drive hybrid power system, which comprises an engine, an automatic transmission, a BSG motor, a battery, a first power battery, a second power battery, a motor and a speed reducer, wherein the engine is connected with the BSG motor;
the engine is connected with a front driving shaft of the vehicle through an automatic transmission to drive front wheels of the vehicle;
the engine is connected with the first motor, and the first motor is connected with the first power battery;
the first power battery is connected with the second power battery, and the second power battery is connected with the second motor; the battery is connected with the first power battery and used for meeting the requirements of electric appliances of the vehicle voltage platform;
the second motor is connected to a rear drive shaft of the vehicle through a speed reducer to drive rear wheels of the vehicle.
In one embodiment, the first power battery is coupled to the battery through a first DC/DC converter and the first power battery is coupled to the second power battery through a second DC/DC converter.
In one embodiment, the novel four-wheel drive hybrid power system further comprises a first battery management system and a second battery management system; the first battery management system is connected with the first power battery and is used for managing the first power battery; and the second battery management system is connected with the second power battery and is used for managing the second power battery.
In one embodiment, the novel four-wheel drive hybrid power system further comprises an automatic transmission controller, an engine controller and a motor controller, wherein the automatic transmission controller is connected with the automatic transmission and used for controlling and managing the automatic transmission; the engine controller is respectively connected with the engine and the first motor and is used for controlling and managing the engine and the first motor; the motor controller is connected with the second motor and used for controlling and managing the second motor.
In one embodiment, the novel four-wheel drive hybrid power system further comprises a vehicle control unit, wherein the vehicle control unit is respectively connected with the engine controller and the motor controller and is used for controlling the vehicle control.
In one embodiment, the novel four-wheel drive hybrid system, wherein the first electric machine is a BSG electric machine or an ISG electric machine.
In one embodiment, the novel four-wheel drive hybrid power system is characterized in that the speed reducer is a single-stage speed reducer with a clutch device, a two-stage speed reducer with a clutch device, a single-stage speed reducer without a clutch device or a two-stage speed reducer without a clutch device.
In one embodiment, the novel four-wheel drive hybrid power system is characterized in that the battery is a 12V battery, the first power battery is a 48V battery, and the second power battery is a 350V battery.
According to another aspect of the present invention, the present invention further provides a novel four-wheel drive hybrid driving method, which is suitable for the novel four-wheel drive hybrid system described above, and the novel four-wheel drive hybrid driving method includes:
when the automobile is started and in a low-speed running state and the electric capacity of the second power battery does not reach the lowest limit value, the second power battery supplies power to the second motor, and the second motor drives the rear wheel of the automobile through the speed reducer so as to enter a pure electric mode;
when the rotating speed of the vehicle reaches the intervention rotating speed set by the engine and the electric capacity of the second power battery does not reach the lowest limit value, the first motor starts the engine, and the engine and the second motor respectively drive the front wheels and the rear wheels of the vehicle at the moment, so that a hybrid driving mode is entered;
when the rotating speed of the vehicle reaches the set driving disengaging rotating speed of the second motor or the electric capacity of the second power battery is lower than the set lowest limit value, the clutch device in the speed reducer is in a separation state, the second motor does not participate in the work of driving the rear wheels of the vehicle, and the vehicle enters a pure engine driving mode.
In one embodiment, the novel four-wheel drive hybrid driving method further comprises the following energy management methods:
when the battery capacity reaches a set minimum value, the first power battery charges the battery through the first DC/DC converter so as to meet the requirements of electric appliances of a vehicle voltage platform;
when the electric capacity of the first power battery reaches a set minimum value, the engine drives the first motor to generate electricity and charge the first power battery, or the first motor receives feedback energy of the engine to charge the first power battery, or the second power battery charges the first power battery through the second DC/DC converter;
when the electric capacity of the second power battery reaches the set minimum value, the first power battery charges the second power battery through the second DC/DC converter, or the second motor receives feedback energy to charge the second power battery.
Compared with the prior art, the novel four-wheel drive hybrid power system and the driving method thereof provided by the invention have the following advantages:
(1) the novel four-wheel drive hybrid power system and the driving method thereof can realize the four-wheel drive function, and can ensure that the front and rear power assemblies output torque as required, so that the vehicle obtains the optimal power combination, and the dynamic property of the vehicle is obviously improved.
(2) According to the novel four-wheel drive hybrid power system and the driving method thereof, when the vehicle is in the pure electric mode, the engine does not work, and fuel oil is not consumed; in the hybrid mode, the driving motor provides a part of torque to drive the vehicle, so that the engine can work in the optimal working range (high-efficiency area), and the fuel consumption is obviously reduced.
(3) According to the novel four-wheel drive hybrid power system and the driving method thereof, the front power assembly and the rear power assembly are coordinated and unified through the vehicle control unit HCU, and the torque output by the two power assemblies is distributed according to the vehicle requirements, so that the driving performance and the comfort are ensured.
(4) The novel four-wheel drive hybrid power system and the driving method thereof have the advantages that no pollutant is discharged in a pure electric mode; during the hybrid mode, because the engine always works in the high-efficiency area, the fuel consumption is reduced, the combustion is more sufficient, the emission of pollutants is greatly reduced, and the energy-saving and emission-reducing effects are more obvious.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
FIG. 1 is a block diagram of a novel hybrid powertrain according to an embodiment of the present invention.
In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
As shown in fig. 1, the novel four-wheel drive hybrid system in the embodiment includes an engine 1, an automatic transmission 2, a first electric machine 3, a first power battery 4, a second power battery 5, a second electric machine 6, and a reducer 7;
the engine 1 is connected with a front driving shaft of a vehicle through an automatic transmission 2 to drive front wheels 100 of the vehicle; the engine 1 is connected with a first motor 3, and the first motor 3 is connected with a first power battery 4; the first power battery 4 is connected with the second power battery 5, and the second power battery 5 is connected with the motor 6; the motor 6 is connected to a vehicle rear drive shaft through a speed reducer 7 to drive vehicle rear wheels 200.
In the present embodiment, the reducer 7 is a two-stage reducer with a clutch device, and in some embodiments, the reducer 7 may also be a single-stage reducer with a clutch device, a single-stage reducer without a clutch device, or a two-stage reducer without a clutch device.
In this embodiment, the first motor 3 is a BSG motor (BSG is a Belt driven Starter/Generator abbreviated as Belt transmission starting/generating Integrated motor), and in some embodiments, the first motor 3 may also be an ISG motor (ISG is an Integrated Starter/Generator abbreviated as Integrated starting/generating Integrated motor).
In this embodiment, novel four drive hybrid power system still includes battery 8, and battery 8 links to each other with first power battery 4, and battery 8 is used for satisfying the demand that vehicle voltage platform used electrical apparatus.
In the present embodiment, the first power battery 4 is connected to the battery 8 through a first DC/DC converter 9, and the first power battery 4 is connected to the second power battery 5 through a second DC/DC converter 10.
The novel four-wheel drive hybrid system in the embodiment further includes a first battery management system 11, namely BMS1(battery management system 1), and a second battery management system 12, namely BMS2(battery management system 2); a first battery management system 11(BMS1) connected to the first power battery 4 for managing the first power battery 4; the second battery management system 12(BMS2) is connected to the second power battery 5 and manages the second power battery 5.
The first power battery, the second power battery and the battery are all rechargeable batteries and are discharged under specific conditions; the energy generated in the motion of the vehicle can charge the first power battery and the second power battery, so that the energy is recovered.
The novel four-wheel drive hybrid power system in the embodiment further includes an automatic Transmission controller 13(Transmission Control Unit, abbreviated as TCU), an Engine controller 14(Engine Control Unit, abbreviated as ECU) and a motor controller 15, wherein the automatic Transmission controller 13(TCU) is connected to the automatic Transmission 2 and is used for controlling and managing the automatic Transmission 2; an engine controller 14(ECU) is connected to the engine 1 and the first motor 3, respectively, for controlling and managing the engine 1 and the first motor 3; the motor controller 15 is connected to the second motor 6 for controlling and managing the second motor 6.
The novel four-wheel drive Hybrid system in this embodiment further includes a vehicle control Unit 16(Hybrid vehicle control Unit, HCU for short), where the vehicle control Unit 16(HCU) is connected to the engine controller 14(ECU) and the motor controller 15, respectively, and the vehicle control Unit 16(HCU) is configured to control the vehicle control.
In the present embodiment, the preferred battery 8 is a 12V battery, the first power battery 4 is a 48V battery, and the second power battery 5 is a 350V battery; wherein: the battery 8 is used for meeting the requirements of electric appliances of a vehicle 12V voltage platform; the second power battery 5 is used for supplying power to the second motor 6, so that an electric driving mode of the automobile is realized; the first power battery 4 can charge the battery 8 and the second power battery 5.
As shown in fig. 1, wherein the dotted line may be considered as a transfer path of energy.
The specific energy management mode of the novel four-wheel drive hybrid power system in the embodiment is as follows:
when the electric capacity of the battery 8(12V) reaches a set minimum value, the first power battery 4 charges the battery 8(12V) through the first DC/DC converter 9(DCDC1) so as to meet the requirement of the electric appliance of the vehicle 12V voltage platform.
When the electric capacity of the first power battery 4 reaches the set minimum value, the engine 1 drives the first motor 3 to generate electricity to charge the first power battery 4, or the first motor 3 receives the feedback energy of the engine 1 to charge the first power battery 4, or the second power battery 5 charges the first power battery 4 through the second DC/DC converter 10(DCDC 2).
When the electric capacity of the power battery 2 reaches the set minimum value, the first power battery 4 charges the second power battery 5 through the second DC/DC converter 10(DCDC2), or the second motor 6 receives feedback energy to charge the second power battery 5.
The novel four-wheel drive hybrid power driving method in the embodiment is as follows:
pure electric mode: when the automobile is started and is in a low-speed running state and the electric capacity of the second power battery 5 does not reach the lowest limit value, the second power battery 5 supplies power to the second motor 6, and the second motor 6 drives the rear wheel 200 of the automobile through the two-stage speed reducer 7 with the clutch device, so that the automobile enters a pure electric mode;
hybrid drive mode: when the rotation speed of the vehicle reaches the intervention rotation speed set by the engine and the electric capacity of the second power battery 5 does not reach the minimum value, the first motor 3 starts the engine 1, and the engine 1 and the second motor 6 respectively drive the front wheels 100 and the rear wheels 200 of the vehicle, thereby entering a hybrid driving mode.
Pure engine drive mode: when the rotating speed of the vehicle reaches the set driving disengaging rotating speed of the motor or the electric capacity of the second power battery 5 is lower than the set lowest limit value, the clutch device in the speed reducer 7 is in a separation state, at the moment, the second motor 6 does not participate in the work of driving the rear wheels 200 of the vehicle, and the vehicle enters a pure engine driving mode.
The invention overcomes a plurality of problems, wherein the problems are more obvious as follows:
firstly, the present invention solves the management problem of three voltage platforms: the system in this embodiment has three different voltage platforms (12V, 48V, 350V), and is complicated in energy management and switching control between different voltages. According to the system, through the methods of reasonably arranging different DCs (the battery 8, the first power battery 4 and the second power battery 5), accurately controlling the recovered energy and the like, energy management and conversion control among different voltages are completed, so that electric quantity among the batteries of different voltage platforms can be complemented, and the requirements of the whole vehicle on different voltages during running are met.
Secondly, the invention solves the problem that the torque distribution of the front and rear power assemblies influences the drivability of the whole vehicle: the system skillfully uses a control scheme of brain and cerebellum, wherein in the embodiment, the brain refers to a vehicle control unit 16(HCU), and the cerebellum refers to an engine controller 14 (ECU). The HCU is responsible for controlling the whole vehicle and distributing the output torque of the front and rear power assemblies, the torque output of the rear power assembly is directly controlled by the HCU in the distributing process, only a demand instruction is sent to the ECU for the output of the front power assembly, and then the ECU coordinates in an engine +48V system to output the torque required by the HCU. The advantage of this control method for the hybrid system is that the HCU does not interfere with the internal control of the engine +48V system.
Compared with the prior art, the invention at least achieves the following technical effects:
(1) the dynamic property is better: the novel four-wheel drive hybrid power system realizes the functions of energy recovery, intelligent start and stop, engine start assisting and the like, simultaneously realizes the rear drive of a vehicle, finishes the torque output of the front and rear power assemblies under the mutual cooperation of the engine, the motor and the power battery, and combines according to an optimal mode, so that the whole vehicle obtains better dynamic property.
(2) The whole vehicle has better driving performance and comfort: according to the novel four-wheel drive hybrid power system, the front power assembly and the rear power assembly are coordinated and unified through the vehicle control unit HCU, and the torque output by the two power assemblies is distributed according to the vehicle demand, so that the driving performance and the comfort are guaranteed.
(3) The economical efficiency is better: the novel four-wheel drive hybrid power system ensures that the engine does not work and fuel oil is not consumed when the vehicle is in a pure electric mode; in the hybrid mode, the driving motor provides a part of torque to drive the vehicle, so that the engine can work in the optimal working range (high-efficiency area), and the fuel consumption is obviously reduced.
(4) The energy-saving and emission-reducing effects are more obvious: the novel four-wheel drive hybrid power system has no pollutant emission in a pure electric mode; during the hybrid mode, because the engine works in the high-efficiency area all the time, the fuel consumption is reduced, the combustion is more sufficient, and the emission of pollutants is greatly reduced.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (7)

1. A novel four-wheel drive hybrid power system is characterized by comprising an engine, an automatic transmission, a first motor, a battery, a first power battery, a second motor and a speed reducer;
the engine is connected with a front driving shaft of the vehicle through the automatic transmission to drive front wheels of the vehicle;
the engine is connected with the first motor, and the first motor is connected with the first power battery;
the first power battery is connected with the second power battery, the second power battery is connected with the second motor, the battery is connected with the first power battery, and the battery is used for meeting the requirements of electric appliances of a vehicle voltage platform;
the second motor is connected with a rear driving shaft of the vehicle through a speed reducer so as to drive rear wheels of the vehicle;
the first power battery, the second power battery and the battery are all rechargeable batteries;
the first power battery is connected with the battery through a first DC/DC converter, and the first power battery is connected with the second power battery through a second DC/DC converter;
the rated voltage of the first power battery is smaller than that of the second power battery;
when the automobile is started and in a low-speed running state and the electric capacity of the second power battery does not reach the lowest limit value, the second power battery supplies power to the second motor, and the second motor drives the rear wheel of the automobile through the speed reducer so as to enter a pure electric mode;
when the rotating speed of the vehicle reaches the intervention rotating speed set by the engine and the electric capacity of the second power battery does not reach the lowest limit value, the first motor starts the engine, and the engine and the second motor respectively drive the front wheels and the rear wheels of the vehicle at the moment, so that a hybrid driving mode is entered;
when the electric capacity of the second power battery is lower than the set lowest limit value, a clutch device in the speed reducer is in a separation state, the second motor does not participate in the work of driving the rear wheels of the vehicle, and the vehicle enters a pure engine driving mode;
when the battery capacity reaches a set minimum value, the first power battery charges the battery through the first DC/DC converter so as to meet the requirements of electric appliances of a vehicle voltage platform;
when the electric capacity of the first power battery reaches a set minimum value, the second power battery charges the first power battery through a second DC/DC converter;
and when the electric capacity of the second power battery reaches the set minimum value, the first power battery charges the second power battery through the second DC/DC converter.
2. The novel four-wheel drive hybrid system according to claim 1, further comprising a first battery management system and a second battery management system;
the first battery management system is connected with the first power battery and is used for managing the first power battery;
and the second battery management system is connected with the second power battery and is used for managing the second power battery.
3. The new four-wheel-drive hybrid system as claimed in claim 2, further comprising an automatic transmission controller, an engine controller and a motor controller,
the automatic transmission controller is connected with the automatic transmission and is used for controlling and managing the automatic transmission;
the engine controller is respectively connected with the engine and the first motor and is used for controlling and managing the engine and the first motor;
and the motor controller is connected with the second motor and is used for controlling and managing the second motor.
4. The novel four-wheel drive hybrid power system according to claim 3, further comprising a vehicle control unit, wherein the vehicle control unit is respectively connected with the engine controller and the motor controller, and the vehicle control unit is used for controlling the vehicle.
5. The novel four-wheel drive hybrid system according to any one of claims 1 to 4, wherein the first electric machine is a BSG electric machine or an ISG electric machine.
6. The novel four-wheel drive hybrid system according to claim 5, characterized in that the reducer is a two-stage reducer with a clutch device or a single-stage reducer with a clutch device.
7. The novel four-wheel drive hybrid system according to claim 1, characterized in that the battery is a 12V battery, the first power battery is a 48V battery, and the second power battery is a 350V battery.
CN201611107536.9A 2016-12-06 2016-12-06 Novel four-wheel drive hybrid power system and driving method thereof Active CN108162952B (en)

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CN111645666B (en) * 2019-09-20 2021-07-23 长城汽车股份有限公司 Torque control method and control device for engine
CN110667368A (en) * 2019-10-16 2020-01-10 中汽研（天津）汽车工程研究院有限公司 Hybrid power system of four-wheel drive vehicle and working method
CN115195447A (en) * 2022-06-27 2022-10-18 中国第一汽车股份有限公司 Hybrid four-wheel drive system and vehicle with same

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